Abstract: Disclosed is an impact-during-suction surgical ureteroscope, comprising: a ureteroscope main body, an operating portion operably arranged in the ureteroscope main body, and a lithotripter. The ureteroscope main body comprises a ureteroscope structure main body and a suction channel extending from a front end to a rear end in the ureteroscope structure main body. The suction channel has a suction opening at the front end. The lithotripter is movably disposed in the ureteroscope structure main body so as to switch between a first state and a second state. When in the first state, a cutting head of the lithotripter extends out of the suction opening so as to impact a stone; when in the second state, the cutting head of the lithotripter is retracted into the suction opening and is used to impact crushed stones blocking the suction opening.

Abstract: A comprehensive and integrated solution, including a dedicated system structure and grounding mechanism, a main radio frequency (RF) coil to transmit and receive signal, secondary RF coils to saturate unwanted signals from non-region-of-interest (ROI) in the excited region, an RF shielding structure configured to shield the main RF coil from generating signals on the non-ROI, and an environmental noise active cancellation mechanism is proposed to construct an NMR system for non-invasive quantitative detection of organs, and further improves the target region selectivity and detection accuracy.

Abstract: A display substrate has a primary display region and a secondary display region, and the secondary display region includes an element arrangement region and a transition region. The display substrate includes: a substrate, and a pixel circuit layer and first via holes located on the substrate. The pixel circuit layer includes an active layer and a multi-layer inorganic insulating layer disposed on a side of the active layer away from the substrate. The active layer is located at least in the primary display region and at least partially surrounds the secondary display region. The multi-layer inorganic insulating layer is located at least in the primary display region and the secondary display region. The first via holes are located at least in the transition region, and penetrate at least one layer of the multi-layer inorganic insulating layer.

Abstract: A switching power supply circuit includes a power transistor circuit, including a plurality of power transistors coupled in series between a power supply end and a ground, where a first electrode of a first power transistor in the plurality of power transistors is coupled to the power supply end by using a second power transistor in the plurality of power transistors, and a second electrode of the first power transistor is coupled to the ground by using a third power transistor in the plurality of power transistors; a drive circuit, configured to drive the second power transistor and the third power transistor; and a first transistor, where both a gate and a first electrode of the first transistor are coupled to a gate of the third power transistor, and a second electrode of the first transistor is coupled to the ground by using a first switch.

Abstract: A display panel includes more than one light transmitting region and a display region; the light transmitting region includes a first light transmitting region and a second light transmitting region; the display panel includes more than one first pixel unit located in the display region and more than one second pixel unit, any second pixel unit is at least partially located in the light transmitting region, and the part of the second pixel unit located in the light transmitting region is a functional part; the first light transmitting region and the second light transmitting region both include n sub-region groups arranged along a first direction, and each sub-region group includes m sub-regions arranged along a second direction; only one of the j-th sub-region in the i-th sub-region group in the first light transmitting region and the second light transmitting region is provided with a functional part.

Abstract: This invention discloses a hollow fiber membrane and its preparation method and application, belonging to the field of membrane separation. The preparation method adopts a spinning device with a triple-orifice spinneret, including the casting solution, bore fluid and outer solution. The bore fluid, casting solution and outer solution are respectively co-extruded from the inner, middle and outer orifice of the spinneret, respectively, to form the nascent membrane. The nascent membrane is immersed in external coagulation bath to form a hollow fiber membrane. The outer solution and bore fluid are weakly-polar non-solvents of membrane-forming material and are water soluble. Based on the characteristics of the bore fluid and the outer solution, on the one hand, the mass exchange rate between solvents and non-solvents can be slowed down, the formation of dense skin is effectively avoided, and the surface porosity of the membrane is improved.

Abstract: A display panel, a display apparatus and a method for manufacturing a display panel are provided. The display panel includes: a base substrate; multiple light-emitting devices, where the light-emitting device includes a first semiconductor layer, a second semiconductor layer and a light-emitting layer located between the first and second semiconductor layers, and the second semiconductor layer is located on a side of the light-emitting layer away from the base substrate; a first package structure, located on the side of the base substrate, where the first package structure includes a first package part located between two adjacent light-emitting devices; and a second package structure, where at least part of the second package structure is located on a side of the light-emitting device away from the base substrate, and a resistivity of the first package structure is higher than that of the second package structure.

Abstract: The present invention provides a polishing pad, a polishing apparatus and a polishing method for a silicon wafer. The polishing pad comprises a polishing surface in contact with the silicon wafer. The polishing surface is provided with at least one groove. When polishing the silicon wafer, the edge of the silicon wafer is at least partially suspended above the groove. The polishing pad, polishing apparatus and silicon wafer polishing method according to the present invention can reduce the polishing rate at the edge of the silicon wafer while keeping the polishing rate of the entire wafer basically unchanged, thereby improving the flatness of the edge thickness of the silicon wafer as well as improving the production yield.

Abstract: The present application provides a method and a device of chemical mechanical polishing (CMP). The method comprises providing a semiconductor wafer to be subjected to polishing; conducting a CMP process to the wafer, wherein the wafer is on a first plane; conducting a hanging treatment, wherein, in the hanging treatment, the wafer is on a second plane above the first plane, the wafer is hanged to expose the lower surface, and the wafer is in rotation. According to the present application, the hanging treatment can remove the slurry, the polishing particles and byproducts from the wafer surface, therefore, it prevents from the adverse effects caused by the polishing particles and byproducts on the wafer in the following process.

Abstract: The present invention provides a polishing pad, a polishing apparatus and a polishing method for a silicon wafer. The polishing pad comprises a polishing surface in contact with the silicon wafer. The polishing surface is provided with at least one groove. When polishing the silicon wafer, the edge of the silicon wafer is at least partially suspended above the groove. The polishing pad, polishing apparatus and silicon wafer polishing method according to the present invention can reduce the polishing rate at the edge of the silicon wafer while keeping the polishing rate of the entire wafer basically unchanged, thereby improving the flatness of the edge thickness of the silicon wafer as well as improving the production yield.

Abstract: Disclosed are a preparation method and applications of a spinosin-Na monomer of Ziziphi Spinosae Semen. The preparation method includes: pulverizing Ziziphi Spinosae Semen; hydrolyzing the powder with an acidic hydrolysis solution; neutralizing the hydrolysate; extracting the supernatant with ethyl acetate several times to produce a crude extract; and separating the crude extract sequentially using macroporous resin and HPLC to produce the spinosin-Na monomer of Ziziphi Spinosae Semen with a good water solubility and a purity greater than 98%. The spinosin-Na monomer prepared herein is capable of significantly inhibiting the proliferation of tumor cells, so that it can be applied in the preparation of a functional food and/or medicine for preventing and/or treating tumors.

Abstract: A transcranial magnetic stimulation circuit, a transcranial magnetic stimulator and a magnetic impulse generation method thereof are provided, in which the circuit includes at least two inductance coils, a direct current, a charging and discharging circuit and a controller. The controller controls the inductance coils to synchronously generate magnetic impulses through an electronic switch. The method includes: coinciding central lines of the inductance coils with each other; controller outputting an impulse sequence to control the electronic switch to enable the inductance coils to synchronously generate magnetic impulses; and superposing the magnetic impulses to form the magnetic impulses required by the transcranial magnetic stimulator. The transcranial magnetic stimulator includes a pillow base and the transcranial magnetic stimulation circuit. A containing cavity is disposed in the pillow base.

Abstract: A system and method is provided for managing and publishing feedback using a merchant-independent and user-centric approach. The system comprises means for registering a user. The system also provides means for collecting, from the registered user, information verifiably indicating, to an appreciable extent, that the user has used a product identified by the collected information. The system further provides means for matching the product to an officially identified product stored in a product database. The system additionally provides means for enabling the user to provide only a single instance of feedback on the matched product. The system further provides means for enabling the user to view the feedback provided by the user on the matched product as well as the feedback provided by other registered users on the matched product.

Abstract: A method and system are provided for performing elliptical-based and hybrid surveillance, performing false target detection and resolution, and performing integrity monitoring using one or more receiving and transmitting elements time synchronized to a common precision time reference, and a central workstation. Antennas for transmitting and receiving elements are located at known positions separated from one another. At a given time, one of the transmitting elements transmits an interrogation signal to one or more targets, which respond to the interrogation with a reply transmission, received by one or more receiving elements.

Abstract: A method and system are provided for performing elliptical-based and hybrid surveillance, performing false target detection and resolution, and performing integrity monitoring using one or more receiving and transmitting elements time synchronized to a common precision time reference, and a central workstation. Antennas for transmitting and receiving elements are located at known positions separated from one another. At a given time, one of the transmitting elements transmits an interrogation signal to one or more targets, which respond to the interrogation with a reply transmission, received by one or more receiving elements.